{
    "index_patterns": ["bla"],
    "settings": {
        "number_of_shards": 1
    },
    "mappings": {
        "example": {
            "_source": {
                "enabled": false
            },
            "properties": {
                "host_name": {
                    "type": "keyword"
                },
                "created_at": {
                    "type": "date",
                    "format": "EEE MMM dd HH:mm:ss Z YYYY"
                }
            }
        }
    }
}